diff --git a/php/templates/containers.twig b/php/templates/containers.twig
index 13f2b372..a783ff2d 100644
--- a/php/templates/containers.twig
+++ b/php/templates/containers.twig
@@ -298,7 +298,7 @@
                                 {% if newMajorVersionString != '' and isAnyRunning == true and isApacheStarting != true %}
                                     <details>
                                     <summary>Note about <strong>Nextcloud Hub {{ newMajorVersionString }}</strong></summary>
-<p>If you haven't upgraded to Nextcloud Hub {{ newMajorVersionString }} yet and want to do that now, feel free to click the button below.</p>
+<p>If you haven't upgraded to Nextcloud Hub {{ newMajorVersionString }} yet and want to do that now, feel free to click the button below. ⚠️ Please make sure to create a backup before clicking the button as the update can go wrong!</p>
                                         <form method="POST" action="api/docker/nextcloud-upgrade-to-latest-major" target="overlay-log">
                                             <input type="hidden" name="{{csrf.keys.name}}" value="{{csrf.name}}">
                                             <input type="hidden" name="{{csrf.keys.value}}" value="{{csrf.value}}">